Silicon nitride bonded magnesia refractory and method

Details Silicon nitride bonded magnesia refractory and method Silicon nitride bonded magnesia refractory and method

1990-06-15

1991-07-02

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501109, 501122, C04B 3504

Patent

active

050285700

ABSTRACT:
A mix for forming a silicon nitride bonded magnesia refractory shape consisting essentially of; for each 100 wt. % thereof at least, about 3 to 20 wt. % of a high purity silicon powder containing no more than about 0.2 wt. % metallic impurities and, correspondingly, 97 to 80 wt. % of a high purity magnesite; and the resultant refractory shape formed after shaping of the mix and nitriding thereof and the method of making such shape.

REFERENCES:
patent: 3765914 (1973-10-01), LaBar et al.
patent: 3839540 (1974-10-01), Ariol
patent: 4533646 (1985-08-01), Wang et al.
patent: 4578363 (1986-03-01), Campos-Loriz
patent: 4581295 (1986-04-01), DeLiso et al.

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